From what I remember, it turned out that the electronics were sufficient. Though the chance of issues (e.g. in case of a software but) were/are increased.

Well, it turned out that the micro inverter in question did not contain the necessary physical relay to show conformity with the claimed norms on electric safety (related to disconnect from the grid in case of grid failure).

They only had a software implementation and were forced to send all customers in Germany a free relay dongle to ensure safety.